Published:2007/11/13  Last Updated:2008/05/21

Sleipnir and Grani Bookmark Search vulnerable to arbitrary script execution


Sleipnir and Grani, web browsers from Fenrir & Co., contain a vulnerability in the bookmark search function that allows an attacker to execute an arbitrary script.

Products Affected

  • Sleipnir 2.5.17 Release2 and earlier
  • Portable Sleipnir 2.5.17 Release2 and earlier
  • Grani 3.0 and earlier


Sleipnir and Grani, web browsers from Fenrir & Co., have a bookmark search function. When a user runs the search function, the search result is displayed in the web browser. If a specially crafted URL is registered to the bookmark, an attacker could execute an arbitrary script on the user's web browser when the search result is displayed.


An attacker could execute an arbitrary script on a user's web browser.


Update the Software
Apply the latest updates provided by Fenrir & Co.

Vendor Status

Vendor Status Last Update Vendor Notes
Fenrir Inc. Vulnerable 2007/11/13


JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Analyzed on 2007.11.13

Measures Conditions Severity
Access Required Routed - can be attacked over the Internet using packets
  • High
Authentication None - anonymous or no authentication (IP addresses do not count)
  • High
User Interaction Required Complex - the user must be convinced to take a difficult or suspicious action. If the honest user must have elevated privileges, they are likely to be more suspicious
  • Low
Exploit Complexity Low - little to no expertise and/or luck required to exploit (cross-site scripting)
  • High

Description of each analysis measures


Daiki Fukumori of Secure Sky Technology, Inc. reported this vulnerability to IPA.
JPCERT/CC coordinated with the vendors under Information Security Early Warning Partnership.

Other Information

JPCERT Reports
CERT Advisory
CPNI Advisory
JVN iPedia JVNDB-2007-000804

Update History